刘家峡水库微塑料的赋存特征及其风险评估

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Abstract Liujiaxia Reservoir was selected as the research area in this paper, and the occurrence characteristics of microplastics in different surface water of reservoir were investigated and analyzed in 2021 and 2022 respectively, meanwhile, the potential ecological risk index (PERI) was used to assess the risk of microplastic pollution in the reservoir area. The results show that:The average abundance of microplastics in surface water of Liujiaxia Reservoir in 2021 is (0.52±0.21) items/m³, and the average abundance in 2022 is (0.58±0.17) items/m³. The abundance level is significantly lower than that of domestic lake-type water bodies, slightly lower than that of river type water bodies, similar to that of reservoir type water bodies, and higher than that of the downstream ocean Bohai Sea. Fourier infrared spectroscopy and microconfocal laser Raman spectroscopy were used to identify the types of microplastics, which are mainly polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polystyrene (PS) and polyvinyl chloride (PVC). The microplastics are mainly fragments and fibers, and the smaller the particle size, the more the number of characteristics. The potential ecological risk of microplastics in the surface water of Liujiaxia reservoir in 2021 is low, and the abundance of microplastics in the reservoir in 2022 is high, but the polymer type is relatively less toxic and has no significant ecological risk.

Key words： microplastics liujiaxia reservoir surface water occurrence characteristics risk assessment

Received: 27 March 2023

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X524

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	Articles by authors
	ZHOU Tian-hong
	ZHANG Jia-qian
	MIN Rui
	YANG Si-yi
	SONG Shang-jian
	ZHANG Guo-zhen

Cite this article:

ZHOU Tian-hong,ZHANG Jia-qian,MIN Rui等. Occurrence characteristics and risk assessment of microplastics in Liujiaxia reservoir[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(11): 6007-6015.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I11/6007

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